chore: Remove doc(html_root_url) attribute from all crates. (#2384)

Fixes #2383.
; Conflicts:
;	tracing-appender/src/lib.rs
;	tracing-attributes/src/lib.rs
;	tracing-core/src/lib.rs
;	tracing-error/src/lib.rs
;	tracing-futures/src/lib.rs
;	tracing-log/src/lib.rs
;	tracing-opentelemetry/src/lib.rs
;	tracing-serde/src/lib.rs
;	tracing-subscriber/src/lib.rs
;	tracing/src/lib.rs

Author: LukeMathWalker

tracing-appender/src/lib.rs

@@ -121,7 +121,6 @@
 //! supported compiler version is not considered a semver breaking change as
 //! long as doing so complies with this policy.
 //!
-#![doc(html_root_url = "https://docs.rs/tracing-appender/0.2.2")]
 #![doc(
     html_logo_url = "https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png",
     issue_tracker_base_url = "https://github.com/tokio-rs/tracing/issues/"

tracing-attributes/src/lib.rs

@@ -52,7 +52,6 @@
 //! supported compiler version is not considered a semver breaking change as
 //! long as doing so complies with this policy.
 //!
-#![doc(html_root_url = "https://docs.rs/tracing-attributes/0.1.23")]
 #![doc(
     html_logo_url = "https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png",
     issue_tracker_base_url = "https://github.com/tokio-rs/tracing/issues/"

tracing-core/src/lib.rs

@@ -116,7 +116,6 @@
 //! [`Dispatch`]: dispatcher::Dispatch
 //! [`tokio-rs/tracing`]: https://github.com/tokio-rs/tracing
 //! [`tracing`]: https://crates.io/crates/tracing
-#![doc(html_root_url = "https://docs.rs/tracing-core/0.1.22")]
 #![doc(
     html_logo_url = "https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png",
     issue_tracker_base_url = "https://github.com/tokio-rs/tracing/issues/"

tracing-error/src/lib.rs

@@ -179,7 +179,6 @@
 //! long as doing so complies with this policy.
 //!
 #![cfg_attr(docsrs, feature(doc_cfg), deny(rustdoc::broken_intra_doc_links))]
-#![doc(html_root_url = "https://docs.rs/tracing-error/0.2.0")]
 #![doc(
     html_logo_url = "https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png",
     issue_tracker_base_url = "https://github.com/tokio-rs/tracing/issues/"

tracing-futures/src/lib.rs

@@ -70,7 +70,6 @@
 //! supported compiler version is not considered a semver breaking change as
 //! long as doing so complies with this policy.
 //!
-#![doc(html_root_url = "https://docs.rs/tracing-futures/0.2.5")]
 #![doc(
     html_logo_url = "https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png",
     issue_tracker_base_url = "https://github.com/tokio-rs/tracing/issues/"

tracing-log/src/lib.rs

@@ -100,7 +100,6 @@
 //! [`tracing::Event`]: https://docs.rs/tracing/latest/tracing/struct.Event.html
 //! [flags]: https://docs.rs/tracing/latest/tracing/#crate-feature-flags
 //! [`Builder::with_interest_cache`]: log_tracer::Builder::with_interest_cache
-#![doc(html_root_url = "https://docs.rs/tracing-log/0.1.3")]
 #![doc(
     html_logo_url = "https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png",
     issue_tracker_base_url = "https://github.com/tokio-rs/tracing/issues/"

tracing-opentelemetry/src/lib.rs

@@ -100,7 +100,6 @@
 //! [subscriber]: tracing_subscriber::subscribe
 #![deny(unreachable_pub)]
 #![cfg_attr(test, deny(warnings))]
-#![doc(html_root_url = "https://docs.rs/tracing-opentelemetry/0.18.0")]
 #![doc(
     html_logo_url = "https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png",
     issue_tracker_base_url = "https://github.com/tokio-rs/tracing/issues/"

tracing-serde/src/lib.rs

@@ -155,7 +155,6 @@
 //!
 //! [`tracing`]: https://crates.io/crates/tracing
 //! [`serde`]: https://crates.io/crates/serde
-#![doc(html_root_url = "https://docs.rs/tracing-serde/0.1.3")]
 #![doc(
     html_logo_url = "https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png",
     issue_tracker_base_url = "https://github.com/tokio-rs/tracing/issues/"

tracing-subscriber/src/lib.rs

@@ -158,9 +158,8 @@
 //! [`env_logger` crate]: https://crates.io/crates/env_logger
 //! [`parking_lot`]: https://crates.io/crates/parking_lot
 //! [`time` crate]: https://crates.io/crates/time
-//! [`libstd`]: std
-//! [`liballoc`]: alloc
-#![doc(html_root_url = "https://docs.rs/tracing-subscriber/0.3.15")]
+//! [`liballoc`]: https://doc.rust-lang.org/alloc/index.html
+//! [`libstd`]: https://doc.rust-lang.org/std/index.html
 #![doc(
     html_logo_url = "https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png",
     issue_tracker_base_url = "https://github.com/tokio-rs/tracing/issues/"

tracing/src/lib.rs

@@ -900,7 +900,6 @@
 //! [flags]: #crate-feature-flags
 #![cfg_attr(not(feature = "std"), no_std)]
 #![cfg_attr(docsrs, feature(doc_cfg), deny(rustdoc::broken_intra_doc_links))]
-#![doc(html_root_url = "https://docs.rs/tracing/0.1.37")]
 #![doc(
     html_logo_url = "https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png",
     issue_tracker_base_url = "https://github.com/tokio-rs/tracing/issues/"